Headlight



F eb. 2U, 1923.

A. u. WILKINSON.

HEADUGHT.

FILED 0CT.24, 1921.

2 SHEETS-SHEET l- INVEZNT DR ATTEIHNEYE Feb, 20,1923:

. 1,445,620 A. n. WILKINSON.

HEADLIGHT. FILED 0CT.24, 1921A 2 SHEETS-SHEET 2.

INVENTEIH M. hm

ATTORNEYS tartan aitnnnr n, 'WILKINSQN, or irnrnnnn, ralissacrrusn'r'rs.

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Application filed Uctober 2a, 1821. Serial N10. 509,997.

To all whom it may concern:

Be it known that 1,:ALBER1 D. Wrnumson, a citizen of the United States, residing at lvl ethuen, in the countyoi Essex and State oi .ll'iassachusetts, have invented new and useful improvements in Headlights, of

which the following a specification.

This invention relates to headlights for:

motor vehicles, a headlight to which the invention. relates includinga paraboloidalre liector and an lllCtlltlflSCGIlt(BlQCtTlC lamp, or

other source of light, located in front of the focal point of thereflector, the direct and reflected rays iromthe sourse of light being projected forward through the open end or mouth 01": the reflector.

The object of the invention isto provide,

simple and ellectiuereflectingmeans, adapted, to project reflected rays in such direc tions to suitably illuminate the track ahead of the vehicle, without projecting glariing into the eyes of persons toward whom the vehicle is moving, said means including a paraboloidal main reflector, and segmental reflectors oitsimple construction cooperative therewith to produce the desired result.

The invention is embodied in the improveaj ments hereinafter described and claimed.

Of the accompanying draw ngs a forming Figure 1 shows in vertical section a paraboloidal reflector and segmental reflectors associatr-zd therewith. in accordance withthe invention, and in side elevation a source of 1 light.

' segmental reflectors.

Figure 3 show s he se 'mental reflectors in perspective, detached from the paraboloidal reflector. i V i f The same reference characters indicate the same parts in all of the figures.

In the drawings, 12 representsa paraboloL dal reflector hereinafter called the main. re-

flector, and 13 represents a source of light, such 1 as an incandescent electric lamp 111 front of the focal point of the main reflector.

Light rays reflected from the upper halt,

when the axis of the reflector is horizontal,

are projected forward and downward, but not upward, as indicated by the angular dotted lines 14 in Figure l.

15 represents a lower segmental reflector, which is a segment or half section of a suba true iSrusto-conical form in that it is curved and presents aninner surface which is longitudinally convex, The segmental reflector if) is arranged with its convex surface facing upward, said surfacebeing suitably finished as a reflecting surface. The larger end oi the reflector 15 is seated on the lower half oi the mouth oi the main reflector, and its smaller end is spaced from the main reflector, as shown by Figure 1. 1,6 re ju'esents an upper segmental reflector, which is a segment or half section of a substantially conical hollow body, deviating lc'roma true conical form in that it presents an outer surface which is longitudinally cnvex, and an inner surface which isloiigitudinallyconcave. The segmental reflector 16 is arranged with its convex surface facing downward, said surface being suitablyfiu ished a rel'lecting surface. The reflectors and; 16 are coaxial with the main reflector l2,an l occupy the lower halt of the latter. 'l he lower reflector is suitably secured to, pported by, the main reflector, and the upper reflector 16 is supported by the lower reflector, preferably through the instrumentzility of a curved standard 18, fixed at its ends to said reflectors.

To secure the lower reflector to the main reflector, ll preferably provide the outer end of the lower; reflector with a segmental flange 19, which is formed to be seated on the lowhr halt of a continuous flange 20, surrounding the mouthof the main reflector, and connected with the last-named flange by a hinge which permits the segmental reflectors to be swung outward from the main reflector, to' aflord access to the lamp 13. Said. hinge may include a tubular member 21., on, the flange 19,tubular members 22, 22 on the flange 20, and a pintle member 23 connecting said tubular members.

The form of the, segmental reflectors and their arrangement relatively to each other, to the source of ligl'it, and to the main reflector, are such that the following results occur: Light rays reflected from the inner portion of the lower half of the main reflector are projected between the segmental reflectors and reflected forward and clownward, but not upward, as indicated by theangular dotted lines 25, some oi said rays being reflected by the upper reflector, others jected between the upper and lower re-flec tors, as indicated by the straight dotted lines 26. Light rays reflected by the outer now be seen, are projected forward and downward, but not upward;

The upper side of the upper reflector 16 forms. a, channel through which reflected rays, indicated by the lower line 14', are projectetl; as shown by Figure 1.

The reflectors above described may he installed in-a suit-able case; having a hinged door which includes a the door, when closed. confining the several reflectors;

The reflectors are adapted to project light raysv obliquely forward and downward and illuminate a wider'aree of the track than would be possible without the segmental reflectors"15 and 16.

- I claim:

1. In a headlight, in combination, a main pia raboloid'al. reflector; a source of light; a substantially segmental lower reflector; means displaceahl securing; the lower reflector to the main reflector; a. substantially segmental upper reflector, and means connecting said; segmental reflectors, so that the upper reflector is supported by, end spaced from the lower reflector, and is (llSPlLCGfilJlO glass panel or lens..

with the latter, said segmental reflecto s heing located within the lower hall of the main reflector, and permitting the light rays irefleoted from said lower hall to he projected between the segmental reflectors Forward and downward. hut not upward. the scgmcw tal reflectors being out of the path of light rays reflected from the upper halt of the main reflector.

27 In a headlight, in coinhination. :1 main paraholoidal reflector provided with a flange atits outer end. a substantially stin incui'nl lower reflector provided at i s outer end with a segmental flange seated on the main rcflector flange and hinged theret to swing toward and from the imiiu reflector llaupw: a substai'itiall; segrnieiital upper reflector. :ind a-standard whereh the upper roflm-i'or is connected with. and synced from the lower reflect-or tor inovcniicnt in unison with the latter said segmental reflectors hc nn' located Within the lower halt oi the. main refiector, and out of the path of rays reflected from the upper halt of the latter. and per niitting the light rays reflected from said lower half to he projected hctwcen the sen"- mental reflectors forward and (l()\\l1\\.ll1i. butnot upward.

In testimony whereof l have :lilixcd my signature.

i' illBl lllT l). lVlLKlNSUN. 

